/*
 * Copyright 2016-2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.creactiviti.piper.taskhandler.random;

import org.apache.commons.lang3.RandomUtils;
import org.springframework.stereotype.Component;
import org.springframework.util.Assert;

import com.creactiviti.piper.core.task.TaskExecution;
import com.creactiviti.piper.core.task.TaskHandler;

/**
 * a {@link TaskHandler} implementaion which can
 * throw an exception based on a probabilty
 * value.
 * 
 * @author Arik Cohen
 * @since Mar 30, 2017
 */
@Component("random/rogue")
class Rogue implements TaskHandler<Object> {

  @Override
  public Object handle(TaskExecution aTask) throws Exception {
    float nextFloat = RandomUtils.nextFloat(0, 1);
    float probability = aTask.getFloat("probability",0.5f);
    Assert.isTrue(probability>=0 && probability<=1,"probability must be a value between 0 and 1");
    if(nextFloat <= probability) {
      throw new IllegalStateException("I'm a rogue exception");
    }
    return null;
  }

}
